EECE7201_HW03_v02 (1)

1. For the ADC0804 used in section 1. the step size can be adjusted by setting the reference voltage on pin 9. When this pin is not connected (as shown in the figure 1 schematic), the reference voltage is the operating voltage Vcc. a) What is the step size for this default setting? b) How can we set the reference voltage on pin 9. to 4 V? c) What would be the step size after changing the reference voltage to 4 V? 2. Determine the analog input that will result in an output code of "10001110". Assume 5 V reference. Show your calculations. 3. What value of the analog input voltage would result in a digital output is 6F (hex)? Assume 4V reference. Show calculations. 4. In section, you used a 8-bit D/A converter. With a reference voltage of 5 V, what voltage does each bit represent in terms of the analog output? Show calculations. 5. For the D/A converter, if the output is 3.62 V, what is the value of the digital input? Show calculations. 6. For the D/A converter circuit shown in Figure 2,…

Fifty years into the future, the way we will probably make base load energy include(s) Select one: A. Solar B.Fission C.Fusion, fission and solar D.Fusion

In a full-wave rectifier _______________. a) the output is apure DC voltage. b) only the negative half of the input cycle is used. c) only the positive half of the input used. d) the complee input cycle is used.

The time period of the output voltage of a single phase bridge rectifier is 25/3 ms. The supply frequency will be _____ Hz.

Sketch the electronic symbol (schematic) for the following components/ devices. Briefly describe the function of the electronic component and use the IEEE/ANSI standard symbol as indicated below. Fixed Resistor Any Variable Resistor Polarized Capacitor

QUESTION 1 What practical skills were taught and assessed in you Electronic Engineering lab? Choose one or more correct answers in the following list: A. Soldering electronic components on a PCB B. Working principles of a semiconductor diode. C. Electronic PCB design D. Soldering an IC on a PCB E. De-soldering surface mount component techniques F. Cleaning the soldering iron tip

Figure 1 shows the circuit diagram for a simple d.c. power supply. a. Identify the type of rectifier circuit represented in figure 1 and explain the operation of the circuit with reference to the function of each component within the circuit. b. Sketch to scale the voltage across R as a function of time showing its relationship to the secondary voltage from the transformer.

A single phase half wave controlled rectifier has RL load. Write the following a) Draw its circuit diagram and waveform. b) Draw and explain its quadrant operation. Explain why the negative voltage appear across the load. d) Explain how the negative voltage can be removed.